With the continuous deepening of urbanization in my country, the demand for small and multi-purpose agricultural machinery is also increasing. Small crawler trucks can adapt to paddy fields, swamps, muddy field roads, rugged mountain roads, and soft grass. It is widely used in agriculture, forestry orchard transportation, freight yard loading, water conservancy construction, infrastructure engineering, and mining sites.

The small crawler transport vehicle adopts crawler wheels. The crawler wheel is a new type of walking mechanism. It can better meet the requirements of various modern vehicles for high mobility and high passability. It combines the advantages of tires and crawler walking mechanisms. . The crawler belt is in close contact with the ground, so that the utility model can keep its balance and advance steadily in the uneven farmland without anyone to support it, effectively reduce the labor intensity of the operator, and overcome various unfavorable terrain conditions for the machinery. The constraints of operation greatly expand the application range of wheeled and tracked transport vehicles, and improve the ability to pass through various complex terrains.

We all know that pressure is related to the size of the pressure and the force-bearing area. The greater the pressure, the smaller the force-bearing area and the greater the pressure; while the friction force is related to the magnitude of the positive pressure and the roughness of the contact surface between the two objects. Larger, the rougher the friction surface, the greater the friction force. Therefore, the crawler wheel of the small crawler transport vehicle is to increase the force bearing area and reduce the pressure under the condition of constant pressure. The surface of the rubber track is made uneven to increase friction and prevent slipping.